class_docstr: Class for RNN-NADE sequence generation models.
code: def _build_graph_for_generation(self):
      return pianoroll_rnn_nade_graph.get_build_graph_fn(
          "generate", self._config
      )()
  
file_path: magenta/magenta/models/pianoroll_rnn_nade/pianoroll_rnn_nade_model.py
imports: from magenta.contrib import training
  from magenta.models.pianoroll_rnn_nade import pianoroll_rnn_nade_graph
  from magenta.models.shared import events_rnn_model
  import note_seq
  from note_seq.protobuf import generator_pb2
label_desc: Use image node_id 1 for calling the PianorollRnnNadeModel obj's underlying member method code with example usage: obj._build_graph_for_generation() and returns: pianoroll_rnn_nade_graph